I don't understand what you mean. What do you want to know about time traveling?
i want to know that is any Negative effects of TTing?
Oh, I forgot the most important thing: travel backwards any amount of time and all your turnips will spoil!
I dont know if this is true or not as I havent tested it, but somebody here said that if an alt character buys the turnips then they wont spoil if its a different character who loads up after time-travelling. again, havent tried this myself as i dont really buy turnips...
I was told this too but it didn't work for me. thankfully I only spent 5k on turnips so I didn't lose much but as far as I know the alt-character buying the turnips thing isn't true.
TTing one day at a time is the safest if you're worried about villagers moving out. But I think everyone's got the most important points covered. But also know that all the loading up of your game can cause your grass to deteriorate more quickly.
even within the same day?